Driving mechanism for paper-making machines



B. A. MALKIN DRIVING MECHANISM FOR PAPER MAKING MACHINES Oct. 1 1929..

Filed Oct. '27, 1928 2 Sheets-Sheen INVENIGR BERN ARDAMALKIN w "l, ATTORNEY a Oct. 1, 1929. B. A. MALKIN DRIVING MECHANISM FOR PAPER MAKING MACHINES Filed 001:. 27 1928 2 Sheets-Sheet HNVENTOR BERNARD-AMALKIN BY G mronNty-s Patented Oct. 1, 1929 PATENT OFFICE BERNARD a MALKIN, or LAcHINE, QUEBEC, CANADA.

DRIVING MECHANISM FOR PAPER MAKING MACHINES- Application filed October 27, 1928. Serial No. 315,405.

' This invention relates to new and useful improvements in paper-making machines and particularl to the drier sections thereof, and the main'o jects of the invention are to provide a drier section which will allow easy access to the interior of the machine from the gear side; which will be economically erected and which will take up less floor space than any of the machines of this type at present in US6- Another object is to provide a drier section in which all or any number of the drier rolls are to be operated in unison.

According to my invention, I provide a plurality of drier rolls which are rotatably mounted on framing members, and driven through the medium of main and idler gears positioned at one side of'the machine: The

framing members at this side are recessed to.

receive therein the said gears and suitable covers are secured to the said framing members to enclose the gears and allow easy access to the interior of the machine from this side.

Some of the idler gears are so arranged in the casing or framing members that they may be adapted to control the number of rolls which ma be driven from any driving unit.

I}; the drawings which illustrate one form of my invention:

Figure 1 is a side elevation of part of a paper drying machine made in accordance with my invention;

Figure 2 is a part plan of the machine shown in Figure 1.

Figure 3 is an enlarged part sectional end elevation of the machine taken on the line 3-3 Figure 1.

Figure 4 is a front elevation of an eccentric bearing for supporting some of the idler gears.

Figure 5 is a sectlonal s1de elevation taken on the line 5-5, Figure 4.

' Figure 6 is a view of a modified type of gear su port.

eferring more particularly to the drawings, 11 designates the upper rolls .and 12 the lower rolls which are secured to and adapted to rotate with the spindles 13 and 14 respectively. The spindles rest on bearings 50 15 which are preferably of the antifriction tend beyond the outer edges of the type and mounted in the side framing members 16 and 17 of the drier. These rolls are preferably arran ed as shown, that is, the upper roll is posltioned between and above the lower rolls. Mounted in suitable bearings 18, depending from the side frame between the upper rolls, are the guide rolls 19. Guide rolls 20 are mounted in bearin s 21 secured to the framing members and etween the lower rolls. The upper felt 23, which is m of the endless type, passes over the top of the upper rolls and under the guide rolls therebetween. The lower felt 24, which is also of the endless type, passes under the drier rolls and over the lower guide rolls. The paper sheet 25 passes under the lower rolls and over the upper rolls alternately through the machine and between said rolls and the felts.

This construction is well known in the art, and my improvement lies in the frame construction and the.driving mechanism contained therein. The spindles on one side of the machine extend beyond the bearings and secured thereto are the toothed gears, 26 and 27. Positioned between the lower toothed gears 26 and adapted to mesh therewith are the idler gears 28. Idler gears 30 are also positioned between the gears 28 and the upper toothed gears 27. It will be seen that all the rolls, when the gears are meshing withone another, may be driven from a common source, such as the driving pinion 29 which may be coupled to a driving motor, not shown.

The sup orting frame 17 on the gear side of the mac ine is provided with a plurality of outwardly extending flanges 31 which exars. These flanges are preferably formed ra ially with the centre of the gears but clear of the teeth thereof. Covers 32 and 33 ma be secured to the flanges to totally enc ose the gears. This construction forms a frame for supporting the drier rolls and guide rolls as well as forming a gear case totall enclosing the gears, and this gear case may lie made oil tight. Bearings 34 and 35 are provided for supporting the upper and lower idler gears respectively. Bearing 34 consists of bearing cups 36 secured to the casing and adapted to 1 hold therein the antifriction bearings 37 which support the ends of the idler wheel shafts 38. The parts of the bearing cup '36 which fit into the casing are concentric with the bearing. The bearings 35, a detail one of which is shown on Figures 4 and 5, have-each a cup 39 to receive the antifriction bearing 40 which supports the end of the spindle or shaft '41 to which the idler gear is attached. The surface 42 in contact with the frame cover is eccentric with the centre of the cup of spindle 41. The bearings 35 are secured to the frame by means of the studs 43 and dowel pins 44 are place. It wi 1 be seen that two or more dowel pin holes are provided in the bearing flange so that the bearing may be so positioned to bring the idler supported thereon into or out of engagement with the idler above and-at each side of the bearing. The throw of eccentricity being slightly greater than the depth of the teeth of the idlers so that the idlers mounted on the eccentric bearings may be thrown into and out of mesh by the turning movement of the bearing.

' In operation it will be seen that the side frame on the gear side supports the drier rolls as well as forming a gear case for the driving and idler gears of the machine. By mounting the gears within the framing and using the antifriction bearings for the rolls, the amount of floor space occupied by the machine is much less than machines where the gears are positioned without or overhung can get nearer to the machine than the present type of machine. The covers being secured to the frame totally enclose the gears so that they may run in oil and reduce wear and maintenance charges to a minimum. Another feature about providing bearings in the covers and in the frame is that idler wheel spindles are supported at both ends and not overhung from the frame. It also allows the idler wheel bearings to be made eccentric so that they may be turned to allow all or any number of the rolls to be moved from a common source. The eccentric bearings are preferably mounted between the bottom roll bearings as shown.

The provision of an enclosed frame adapted to totally enclose the gears ensures safe operation of the machine without sacrificing valuable floor space. i

In Figure 6 the idler gear Wheel is rotatably mounted on an eccentric spindle 46 the ends of which are supported on suitable bearings 47 and 48 formed in the side of the frame and cover. The end 49 of the spindle may have a handle 50 attached thereto to facilitate the turning of the spindle to place the idler gear into or out of mesh with the adjacent toothed wheels thus providing means for rovided to hold the bearing in.

' for supporting the bearings, sai

quickl alteringthe number of driven rolls in eac section of the drier.

The mechanismshown is onlyfor illustratwo (purposes, and it will be readily understoo that man modifications may be made to the positionm of the rolls, the type of bearin and the s ape of the framing members without departing from the spirit of the invention.

Having thus described my invention, what I claim 1s: 1

1. In a aper-making machine a plurality of drier ro ls, side framing members adapted to rotatably support the drier rolls, a plurality of gears adapted to rotate said rolls, said gears being positioned within the framing members.

2. In a paper-makin 'machine, a plurality of drier rolls si e framing members a apted to rotatab plurality of driving gears for the rolls, said gears being ositioned within one of the raining mem ers and covers secured to the frame to totally enclose the said gears.

3. In a pa er-making machine, a plurality;

of drier, rol s, roll s indles secured thereto, bearings for rotataby sup ortin the spindles, driving gears secure to t e spindles for rotating the rolls, side framin members bein recessed to receive the gears and covers for t e framing members to enclose the gears.

4. In a paper-making machine a plurality of drier rolls, a pluralit of guide rolls, a train of and side raming members adapted to totally enclose the gears and support the drier and uide rolls.

5. n a pa er-making machine, a plurality of drier ro s, a plurality of guide rolls, means for rotating said rolls, 'and framin members for supporting the guide rolls an drier rolls, one of said members being adapted to totally enclose the roll rotating means.

6. In a paper-making machine, a plurality of drier rolls arranged in two horizontal rows, spindles for said rolls, bearing for the spindles, gear wheels at one end of each of the drier roll spindles, idler gear wheels between the aforementioned idlers and the upper rolls gears and side framing. members for supporting the roll bearing spindles, and the idler gears, and the guide rolls, one of said members being adapted to totally enclose the idler gears and the roll driving gears secured to the spindles.

7. In a aper-making machine, two rows of paper rying rolls, felt guide rolls between each pair of rolls in the same row, roll spindles secured to the rolls, side framing members for supporting the guide roll spindles and the guide rolls, toothed gears secured to each drier roll spindle, idler toothed wheels between each pair of lower roll gears, and adapted to mesh therewith,

ly support the rolls, a;

members ears for rotating the drier rolls.

Ill

idler toothed wheels between the lower idler wheels and the upper roll gears, covers secured to the frame on one side of the machine to totally enclose the gears and bearings in the framing member and the cover to rotatably support the idler gears.

8. In a paper-making machine, a plurality of drier rolls arranged in two horizontal arallel rows, framing members, having earings adapted to rotatably support the rolls, felt guide rolls, between the drier rolls and supported on the framing members, toothed wheels secured to the drier rolls, idler toothed wheels between the lower roll gears and adapted to mesh therewith,tidler toothed wheels between the lower idler rolls and the gears of the upper rolls, means to drive the gears, bearings in the framing for supporting the idler wheel, the bearing for the lower idler wheels being made eccentric so that the train of gearing may be altered to drive all or any number of the drier rolls. 9. In a paper-making machine, a plurality of drier rolls arranged in two parallel rows, framing members adapted to rotatably support the rolls, toothed wheels secured to the drier rolls, idler toothed wheels between the gears of the lower rolls, a second set of idler toothed wheels between the lower idler wheels and the upper roll gears, said lower idlers bein 'mounted eccentrically to allow the train 0 gearing to be altered to vary the number of rolls driven by any one unit, and means secured to the framing members to totally enclose the gears.

In witness whereof, I have hereunto set m hand. r y BERNARD A. MALKIN. 

